Head receiver set



Filed Feb. 27, 1922 Patented July 20, 19 26 A I PATEN ore-res. Y

rmnn wILL aMwjKa 's Ine, an, or oi-IIoAGo, ILLINOIS, Assronon ro KnLLosa swI'roII'Boan-n Ann" SU-ZP1LY company, or jonroaeo, ILLInoIs, A CORPORATION A I on ILLINOIS RECEIVER: sn'r.

Application filed; February a, 1922. serial no. 539.257.

My invention relates to he'ad receiver sets in I general, H and has to do more particularly.

W ith'an improvedr eeiver head set "for? use in telephoneor wireless receiving, Where it isRdesired-to have two ear pieces properly fitted and held against the ears in the best positions for hearingsand at'the same time comfortably.

I Various means justn' ent of thereceivers m such sets so that they nlay be readily shli'ted in position on the "headg'band to accommodate heads of variousslzesand shapes... Set screws and other-devices have been used, and usually the set mustibe removed from the wearers head to permit this ad ustme'nt. I To overcome theseobjectionable features; I' have provided. an 1 improved spring clamping member which, byv means of frictional resistancesholds the receiver of the set in any position and enables adjustments to be made Without.removingthe receiver set from the headqo'l the/wearer. I

invention, reference may behad to; the accompanying drawing, in whichlike reference charactersina'the several views denote like parts, and inwhich- Fig. 1 is an elevation'ot a complete head set embodying my invention; q

2 shows a receiver and clamping device in plan View; g

- Fig. 3 is an enlarged view partly in sec tion along the line 3+3 oi Fig. 2', to more clearly illustrate the spring clampingmem ber; r

Figzd is a view similar to Fig; 3,. in which the clamping member is operated to permit adjustment of the head receiver; and Fig. 5 is a perspective viewof the U- shaped clamping member. V

Referring nowfmore in detail to my invention as illustrated, I show a head band 1 of suitableinaterial and formed so as to fit snugly over the top or the head of the wearer.- To the free ends f the head band 1; I rivet U-shaped spring clamping members 3, constructed ofsuitable' spring steel,

presently be; described. Each leg 4 of the :8 vvhichare adapted to receive the pins 9 otthe receiver 10 to pivotally support the member 7. have been dev sed forad ears of the wearer.

w-member 3 is provided with an orifice 5 to permit the insertion of therod 6. The rod 6 has secured to it a yoke member 7- whose free ends are provided with suitable orifices receiver between the free ends at the yoke I To insert the rod 6 into the orifices 5 in the legs 4. of the member '3, the tree ends of the said legsd are forced toward eacl'i other against their normal tension until they are substantially parallel with each other as.

clearly illustrated in Flgd. This movement places the legs l of the member 3 at right angles with the rod 6;-an d as the orifices 5 are slightly larger than the diameter of the rod 6, the same m be' inserted or. freely moved up or down. When the tension is released'ifrom. the free ends of the legs elof the U-shaped memberii, they assume their normal posit on asillustrated 111 Fig. 3, thus placing their legs 4 in angular relation to the For. amore complete understanding of my shaped member 3 to hold the rod firmly wherever it may. be. From the above description, it may readily be seen that in order to adjust tie receivers 10'up or, down,

"as the case may be, to fit properly to the ears of the wearer, all that is necessary is to press together with the fingers the free ends of the legs 4 of a U-shaped clamping member 3 until the walls of the orifices 5 free the rod [6 when the rod (3 and itssupported receiver 10 may be moved up or down until the receiver 10 is properly fitted against the ears of'thewearer. When this adjustment is obtained, pressure is releasedfrom the tree ing the'orifices 5 toagain clamp the rod 6 to hold it in its adjusted position by means of the frictional resistances produced by the engagement of the edges 5 and 5 of the When the receivers 10 have been placed'in their adjusted positions after the manner described, the rods 6 may be rotated in the openings 5 inthe legs 4 or" the member 3 to permit the receivers 10 to fit snugly against ends'oi' the legs 4 of the members 3, thus permitting the legs 4 to spread apart causorifices 5 with the surface otthe rod 6. I

A circumferential groove 6 is provided in the free end of the rod 6, which groove (5 is adapted to ei'igage the upper diverging leg l of its associa ed U-shaped clamping member 3 to prevent the rod 6 from disengaging the legs 4:- iVh-en the rod 6 is being adjusted and should it be pulled clown- \vardly to its fullest operating position the groove ('3' will engage the upper leg 4: as the rod 6 will tend to move in a slanting or a diagonal direction when adjustment is being made and not in a direct vertical line as the person wearing the head band in ad justing the receivers to his cars will naturally pull the same at an angle and not in a direct vertical line. Of course, the free end of rod 6 is of a proper size to pass through the orifices in the legs at when the rod 6 is moved in a direct vertical direction w iich will permit the rod 6 to disengage the legs l of the clamping member lVhile I have illustrated and described a preferred embodiment of my invention, it is to be understood that changes and modifications will readily suggest themselves, but I aim to cover all such changes and modifica tions as come within the spirit and scope of the appended claim.

lVhat I claim as new and desire to secure by United States Letters Patent, is

A device of the character described comprising a headband, U-shaped clan'iping members provided with diverging legs, rivets for securing said U-shaped clamping members to the opposite ends of said head band to prevent movement of said U-shaped clamping members relative to said head band, the legs of said U-shaped clamping members being provided with orifices, a pair 01'' receivers, yokes having pivot pins secured to their ends which enter orifices in said receiver tor pivotally supporting said receivers, orifices in said yolies intermediate of their ends, rods having their one end entering said orifices, the said ends being spun over to secure said posts to said yok-es to form a pair of units, the free end of the said rods extending through the said orifices in the diverging legs of the said U-shaped clamping members, the said diverging legs of the said U-shaped clamping members, thus placing the walls of the orifices in the diverging legs in angular relation to the axes of the rods to cause the opposite edges oi the orifices in the diverging legs to impinge tightly upon the circumferential surfaces of the said rods to prevent tree longitudinal sliding movement of said rods but to permit rotary moven'ient of said rods and their associated yokes and receivers as a whole in said orifices, a conical shaped circumferential groove in the free ends of said rods cooperating with one of the diverging legs of its associated U-shapedmemher, said leg entering into said groove to prevent the rod from being withdrawn from the orifices in said diverging legs when moved to its extreme upper adjusted position in said U-shaped clamping members.

Signed by me at Chicago, in the county of Cook and State of Illinois, this 24th day 01' February, 1922.

FRANK WILLIAM KAISLING, JR. 

